243331413 has 16 divisors (see below), whose sum is σ = 354324096. Its totient is φ = 147631680.

The previous prime is 243331409. The next prime is 243331441. The reversal of 243331413 is 314133342.

It is not a de Polignac number, because 243331413 - 2² = 243331409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243331463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41170 + ... + 46707.

It is an arithmetic number, because the mean of its divisors is an integer number (22145256).

Almost surely, 2^243331413 is an apocalyptic number.

It is an amenable number.

243331413 is a deficient number, since it is larger than the sum of its proper divisors (110992683).

243331413 is a wasteful number, since it uses less digits than its factorization.

243331413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87964.

The product of its digits is 2592, while the sum is 24.

The square root of 243331413 is about 15599.0837230909. The cubic root of 243331413 is about 624.3087080934.

Adding to 243331413 its reverse (314133342), we get a palindrome (557464755).

The spelling of 243331413 in words is "two hundred forty-three million, three hundred thirty-one thousand, four hundred thirteen".